Biamp uses the IEEE 802.1 Audio Video Bridging (AVB) open standard to transmit AV traffic between Tesira devices. AVB is built in to Ethernet and incorporates other 802.1 standards for automatic VLAN configuration, automatic multicast address assignment, stream reservation, traffic shaping, guaranteed delivery and time synchronization. Like all 802.1 standards, AVB support is required on the switch.
All switches described in this article have been informally tested with Biamp Tesira products1. Due to differences in switch designs (switching capacity, CPU speed, etc.), each model has different abilities for the maximum number of AVB streams and devices it can manage. Contact the switch manufacturer for more detailed information.
Biamp strongly recommends use of Avnu Certified switches. The Avnu Alliance is a community creating an interoperable ecosystem of low-latency, time-synchronized, highly reliable networked devices using open standards through certification. Devices that pass independent lab testing receive Avnu certification. Biamp Tesira products are Avnu Certified. See the Avnu Alliance website for a list of certified products.
Cisco® Catalyst® 3650 and 3850 series switches are AVB enabled and Avnu certified. See the Cisco AVB page for specific details and FAQs.
AVB is supported on select models of the following Catalyst series.
|Catalyst 3650 Series||Catalyst 3850 Series||Catalyst 9300 Series||Catalyst 9500 Series|
|All models supported.
Note: 9300-48UXM supports AVB on the first 16 ports (1–16) only.
Note: The Catalyst 9300 series and Catalyst 9500 series are pending Avnu certification.
The following Cisco license levels are required for AVB support.
- ipbase or ipservices license level for Catalyst 3000 family.
- Network Advantage for Catalyst 9000 family.
The following Cisco IOS® XE Software release versions are required for AVB support.
- IOS XE 16.6.4 for Catalyst 3000 family.
- IOS XE 16.8.1 for Catalyst 9000 family.
- AVB is not supported on stacked switches (StackWise).
- AVB is not supported on ports that are combined using link aggregation (EtherChannel).
- Up to 200 streams are supported per switch.
Extreme Networks Avnu certified AVB-enabled switches include select Summit® series switches, and scale from Gigabit to 10/40GbE, copper/fiber, with or without PoE+. AVB support is available on Extreme Networks switches running ExtremeXOS® version 15.3 or later with the purchase of an AVB feature pack. Please contact Extreme Networks or Extreme Networks Channel Partners for more details.
Biamp recommends EXOS 220.127.116.11 or later for mixed media networks. The latest recommendations for firmware are available at ExtremeXOS Release Recommendations.
Extreme supports AVB on the following Summit series:
|Summit Series||Stream Limits|
Note: The X430 only supports up to 8 connected AVB ports, regardless of switch size. AVB video streams are not recommended with this switch.
|Summit X440, X440-G2
Note: The X440 first gen is not recommended with over 20 enabled AVB ports, regardless of switch size. If using an AMP-450P or TCM-1/TCM-1A, LLDP must also be enabled.
Note: The X440-G2 24 and 48 port models support AVB on ports 1-24 and the rear SFP+ combo ports 51-52. AVB is not supported on ports 25-48, 49 or 50
|Summit X670, X670-G2||4096|
Select models of the Control4/Pakedge S3-series are AVNu certified and AVB-enabled. AVB licensure is included with the switch firmware at purchase or with firmware update. All AVNu certified AVB-enabled Pakedge switches are shown in the table below:
|# of Gigabit Copper Ports||PoE+ Budget||# of 10 Gigabit SFP+ Ports||Firmware Version||Recommended Max Streams*|
* Based on a switch load of 12 AVB devices. Not recommended for AVB video at this time; Pakedge development underway.
For further details on enabling AVB on Pakedge S3 series switches, please visit the Pakedge AVB configuration and resources page.
Select models of the Netgear GS7-series support AVB functionality. All Netgear switches require an EAV license in order to use the AVB functionality. All GS724Tv4 switches that are purchased from Biamp Systems already have this license installed. Switches purchased from other vendors may require this license to be purchased and installed separately. All AVB-capable Netgear switches are shown in the table below:
|Model Number||# of Ports||Port speed||PoE||Firmware Version||Setup Instructions|
Note that the Netgear AVB switches cannot be used in conjunction with AVB switches from other manufacturers. Additionally, the GS724Tv3 switch cannot be used in the same network as other Netgear switches. When using Netgear AVB switches, all switches in the network that are used for AVB traffic must be the same manufacturer and model.
Netgear switches are not Avnu certified and are suitable for small to mid-sized AVB implementations. The use of a single switch for AVB device counts greater than 16 should be avoided regardless of port density, due to the high CPU demands placed on a switch in managing AVB streams and ports.
Biamp dealers can purchase the Netgear GS724Tv4 switch from Biamp Systems, in which case the switch will be fully configured for AVB out of the box. Any switch not purchased from Biamp Systems will need to be configured for AVB (see Setup Instructions links in the table above).
GBIC Fiber Transciever
The Netgear GS7xxT switches include two GBIC ports for fiber optic connections. Compatible GBIC modules for these switches include:
- Netgear AGM731F : 1000BASE-SX (Multi mode; up to 550m with 50/125 cable, up to 275m with 62.5/125 cable)
- Netgear AGM732F : 1000BASE-LX (Single mode; up to 10km with 9/125 cable)
- Netgear AGM733 : 1000BASE-ZX (Single mode; up to 70km with 9/125 cable)
- Avago AFBR-5715APZ
- Diablo Cable GE-SFP-SX - Multi mode 2Km Item # 18530
- Diablo Cable GE-SFP-LX/LH Single mode - 10Km Mini GBIC Item # 18531
MOTU offers a 5-port AVB switch that has been confirmed to work with AVB-enabled Biamp Tesira devices. The model number of the switch is simply "AVB Switch". See MOTU's website for more information.
Biamp has informally tested the switch and determined that it is capable of handling at least 36 AVB streams, for a total of 144 AVB audio channels. There may be additional channel/stream restrictions on networks that consist of multiple MOTU switches. For systems that use multiple MOTU switches at the edge of a larger AVB network, Biamp recommends using a higher-capacity AVB switch (such as an Extreme Networks switch) as the core switch. The MOTU switch cannot be used in conjunction with a Netgear AVB switch.
Biamp recommends the MOTU switch primarily for smaller installations with relatively light AVB usage. Biamp does not recommend building larger AVB networks using multiple MOTU switches connected directly to each other, or using the MOTU switch in systems with heavy AVB usage. Fiber media converters are not recommended for use with MOTU AVB.
AVB can be converted to run over fiber optic cables using media converters. However, it is important to use true media converters that do not have integrated Ethernet switches built into them. The following media converters have been informally tested with Tesira products:1
- Diablo Cable 18243 - 1310nm / 10KM GBIC 10/100/100Base TX to 1000Base FX
(Please ensure the unit is used in 'converter' mode rather than 'switch' mode. SW-1 should be set to OFF, SW-2 should be set to ON.)
- Luxcom OM1000E - 1000BASE-T to 1000BASE-X
The length of the fiber line and media converter will have an impact on propagation delay. The peer delay threshold in Tesira is configurable up to 2,147,483,647 nanoseconds. If the link propagation delay exceeds this threshold, AVB clocking will not function correctly. Both the switch and Tesira must have their peer delay threshold configured to account for the media conversion. MOTU AVB switches do not have a configurable peer delay and should not be used with fiber media convertors.
1. Manufacturer specifications can change without notice. Biamp Systems strives to keep this list up to date, but is not always made aware of changes made by third parties to the Ethernet switches referenced, and therefore Biamp Systems cannot guarantee compatibility with any of the products listed on this page.